Bluetooth Car Kits,LEOKOR Wireless FM Transmitter Radio Adapter with Car Charger Hands-Free Calling MP3 Player Support USB SD Card Reader Built-in microphone with enhanced voice detection makes hands-free calls easy. Just plug-in, sync your phone, and you're ready to talk. Broadcast the best & clearest quality sound through FM radio station (88.1 ~ 107.9 mHz) and streams your music from your smartphone or bluetooth MP3 devices Support an external TF caed,can play music files in MP3/WMA format. Universal USB port lets you charge your Smartphone or MP3 Player while streaming, so you can power up while you're talking or listening to music. Compatibility mobile devices including the iPad , iPhone, iPod, HTC, Galaxy, Blackberry, MP3 Players, Digital Cameras, PDAs, Mobile Phones.